TRAPPING OF WATER-VAPOR FROM AN ATMOSPHER E BY SILICATE CONDENSATE DURING PULSE VAPORIZATION

Results of experimental investigation of interaction of an atmosphere containing water vapor and condensate which was produced during pulse vaporization of clinopyroxene are presented. It was shown that hydroxi des are effectively formed during the contact of hot condensed particl es with water vapor. Mostly all elements form the hydroxides, but Mg a nd Si form such compounds most effectively. The concentration of trapp ed water in condensate in a form of hydroxide is variable depending on conditions Of water vapor and condensate interaction and can attain 1 0 wt.% of condensate. This effect is discussed in connection with the problem of formation of an atmosphere of impact origin.